Trò chơi Angry Birds trong UNITY Engine
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- FloatTweenProperty.cs
- genericTypes /
- properties /
- GoKit /
- Plugins /
- Assets /
- project /
1 using UnityEngine;
2 using System;
3 using System.Collections;
4
5
6 public class FloatTweenProperty : AbstractTweenProperty, IGenericProperty
7 {
8 public string propertyName { get; private set; }
9 private Action<float> _setter;
10
11 protected float _originalEndValue;
12 protected float _startValue;
13 protected float _endValue;
14 protected float _diffValue;
15
16
17 public FloatTweenProperty( string propertyName, float endValue, bool isRelative = false ) : base( isRelative )
18 {
19 this.propertyName = propertyName;
20 _originalEndValue = endValue;
21 }
22
23
24 /// <summary>
25 /// validation checks to make sure the target has a valid property with an accessible setter
26 /// </summary>
27 public override bool validateTarget( object target )
28 {
29 // cache the setter
30 _setter = GoTweenUtils.setterForProperty<Action<float>>( target, propertyName );
31 return _setter != null;
32 }
33
34
35 public override void prepareForUse()
36 {
37 // retrieve the getter
38 var getter = GoTweenUtils.getterForProperty<Func<float>>( _ownerTween.target, propertyName );
39
40 _endValue = _originalEndValue;
41
42 // if this is a from tween we need to swap the start and end values
43 if( _ownerTween.isFrom )
44 {
45 _startValue = _endValue;
46 _endValue = getter();
47 }
48 else
49 {
50 _startValue = getter();
51 }
52
53 // setup the diff value
54 if( _isRelative && !_ownerTween.isFrom )
55 _diffValue = _endValue;
56 else
57 _diffValue = _endValue - _startValue;
58 }
59
60
61 public override void tick( float totalElapsedTime )
62 {
63 var easedValue = _easeFunction( totalElapsedTime, _startValue, _diffValue, _ownerTween.duration );
64 _setter( easedValue );
65 }
66 }
2 using System;
3 using System.Collections;
4
5
6 public class FloatTweenProperty : AbstractTweenProperty, IGenericProperty
7 {
8 public string propertyName { get; private set; }
9 private Action<float> _setter;
10
11 protected float _originalEndValue;
12 protected float _startValue;
13 protected float _endValue;
14 protected float _diffValue;
15
16
17 public FloatTweenProperty( string propertyName, float endValue, bool isRelative = false ) : base( isRelative )
18 {
19 this.propertyName = propertyName;
20 _originalEndValue = endValue;
21 }
22
23
24 /// <summary>
25 /// validation checks to make sure the target has a valid property with an accessible setter
26 /// </summary>
27 public override bool validateTarget( object target )
28 {
29 // cache the setter
30 _setter = GoTweenUtils.setterForProperty<Action<float>>( target, propertyName );
31 return _setter != null;
32 }
33
34
35 public override void prepareForUse()
36 {
37 // retrieve the getter
38 var getter = GoTweenUtils.getterForProperty<Func<float>>( _ownerTween.target, propertyName );
39
40 _endValue = _originalEndValue;
41
42 // if this is a from tween we need to swap the start and end values
43 if( _ownerTween.isFrom )
44 {
45 _startValue = _endValue;
46 _endValue = getter();
47 }
48 else
49 {
50 _startValue = getter();
51 }
52
53 // setup the diff value
54 if( _isRelative && !_ownerTween.isFrom )
55 _diffValue = _endValue;
56 else
57 _diffValue = _endValue - _startValue;
58 }
59
60
61 public override void tick( float totalElapsedTime )
62 {
63 var easedValue = _easeFunction( totalElapsedTime, _startValue, _diffValue, _ownerTween.duration );
64 _setter( easedValue );
65 }
66 }